#643 how to get device(unit) plug on/off event

[Anonymous]

Hi,
I want reset my data struct whenever my device plug
on/off at 1394 port in my programme using libraw1394.
I saw the raw1394_set_bus_reset_handler function to
register one busreset event notify handler, but my
question is since all types of enent would send to me
whenever bus reset, but only device plug on/off &
Modified(changed) I need.
So, could anyone help me? Or tell me how to get the
enent when my device changed, plug out, plug on.
Thanks